i had problems with this yesterday. i had to jailbreak the phone before running the script. after that...it worked fine. (i did end up with a bunch of random files in my /var/root directory as that is where the phone connects to if it has not been brought out of jail before connecting to it) try jailbreaking, then running the script...

i did. it seems like there is a file missing. i even tried doing the windows installer and it says something about file missing at the beginning of each phase and then after it is complete it still wont work.